Chakkrit Parapuntakul, director-general of the department, said around one million of the commemorative coins had been sold since the King passed away on Oct 13.

The department had 24 types of commemorative coins in stock, totalling three or four million. They were minted to honour King Bhumibol on various auspicious occasions and are currently available for purchase.

Mr Chakkrit said after the King’s passing mourners flocked to the department, the Bureau of Monetary Management on Chakrabongse Rd and the Royal Thai Mint in the Rangsit area to snap up commemorative coins in remembrance of His Majesty. Buyers often took a long time in choosing which coins they wanted, resulting in long lines.

Bundling five B20 coins into one pack would help save time, and make it more convenient for buyers.

Each person is allowed to purchase only two sets.

The five-coin series was minted to celebrate His Majesty’s achievement in receiving the Humanitarian Soil Scientist award from the International Union of Soil Sciences for his dedication to soil resource management, the 60th anniversary of the Department of Alternative Energy Development and Efficiency, the King’s 80th birthday anniversary, the 50th anniversary of the Royal Rainmaking Project, and the 80th birthday anniversary of Her Majesty Queen Sirikit.

And how can I get those commemoratives online? Is there a way to purchase them in internet coin shops or something? Three million of coins would be enough to sell them worldwide, it's much more than other commemorative pieces' mintages are. I just checked Coinsberg.com trying to find out how to get those beautiful coins to my collection, but it's unclear yet.